/*
   There are a total of 0 entries in the algebraic variable array.
   There are a total of 3 entries in each of the rate and state variable arrays.
   There are a total of 6 entries in the constant variable array.
 */
/*
 * VOI is time in component environment (day).
 * CONSTANTS[0] is lambda in component uninfected (first_order_rate_constant).
 * CONSTANTS[1] is d in component uninfected (first_order_rate_constant).
 * CONSTANTS[2] is beta in component infected (first_order_rate_constant).
 * STATES[0] is v in component virus (dimensionless).
 * STATES[1] is x in component uninfected (dimensionless).
 * CONSTANTS[3] is a in component infected (first_order_rate_constant).
 * STATES[2] is y in component infected (dimensionless).
 * CONSTANTS[4] is k in component virus (first_order_rate_constant).
 * CONSTANTS[5] is u in component virus (first_order_rate_constant).
 * RATES[1] is d/dt x in component uninfected (dimensionless).
 * RATES[2] is d/dt y in component infected (dimensionless).
 * RATES[0] is d/dt v in component virus (dimensionless).
 * There are a total of 0 condition variables.
 */
void
initConsts(double* CONSTANTS, double* RATES, double *STATES)
{
CONSTANTS[0] = 1;
CONSTANTS[1] = 0.01;
CONSTANTS[2] = 0.05;
STATES[0] = 5;
STATES[1] = 100;
CONSTANTS[3] = 0.5;
STATES[2] = 0;
CONSTANTS[4] = 1;
CONSTANTS[5] = 1;
RATES[1] = 0.1001;
RATES[2] = 0.1001;
RATES[0] = 0.1001;
}
void
computeResiduals(double VOI, double* CONSTANTS, double* RATES, double* OLDRATES, double* STATES,
                 double* OLDSTATES, double* ALGEBRAIC, double* CONDVARS)
{
resid[0] = RATES[1] - (CONSTANTS[0] -  CONSTANTS[1]*STATES[1]) -  CONSTANTS[2]*STATES[1]*STATES[0];
resid[1] = RATES[2] -  CONSTANTS[2]*STATES[1]*STATES[0] -  CONSTANTS[3]*STATES[2];
resid[2] = RATES[0] -  CONSTANTS[4]*STATES[2] -  CONSTANTS[5]*STATES[0];
}
void
computeVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
}
void
computeEssentialVariables(double VOI, double* CONSTANTS, double* RATES, double* STATES, double* ALGEBRAIC)
{
}
void
getStateInformation(double* SI)
{
SI[0] = 1.0;
SI[1] = 1.0;
SI[2] = 1.0;
}
void
computeRoots(double VOI, double* CONSTANTS, double* RATES, double* OLDRATES, double* STATES,
             double* OLDSTATES, double* ALGEBRAIC, double* CONDVARS)
{
}